Pipe Jacking
Pipe Jacking is primarily used to install large diameter concrete pipe directly into the ground. The tunnel can be excavated using a variety of methods such as hand mining or a tunnel boring machine. A TBM is generally used to mine while the pipe is systematically "jacked" into the ground.
Calgary Tunnelling to date has successfully installed concrete pipe ranging from 36"Ø to 100" Ø, as well as 120" square line.